After the initial photograph of evidence tested using ninhydrin was taken, some fingerprints appear on the side of evidence . What is this most likely an indication of? There were fingerprints on the paper which were significantly older than the first The evidence was not fully dry when photographed The evidence was handled by someone who was not wearing gloves The ninhydrin did not work properly and the test must be considered inconclusive

Question

After the initial photograph of evidence tested using ninhydrin was taken, some fingerprints appear on the side of evidence . What is this most likely an indication of? There were fingerprints on the paper which were significantly older than the first The evidence was not fully dry when photographed The evidence was handled by someone who was not wearing gloves The ninhydrin did not work properly and the test must be considered inconclusive

Answer 1

The appearance of fingerprints on the side of the evidence after the initial photograph was taken is most likely an indication that the evidence was not fully dry when photographed. Ninhydrin reacts with amino acids in fingerprint residues to produce a colored compound, typically purple, which becomes more visible as it dries. If the evidence was not completely dry when the first photograph was taken, additional fingerprints may become visible as the drying process continues. Therefore, the correct answer is:The evidence was not fully dry when photographed.

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